I am quite new to Shopify and I have recently set up PayWhirl Recurring Payments on the one product that I am currently selling. While it doesn't look perfect, the subscription option looks okay when the screen is static, but when you start scrolling it doesn't move in line as it should. You can see the product and its subscription option here. I am using the Narrative theme. This issue only occurs on desktop and is fine on mobile devices.
Any advice on how to fix this problem is appreciated. Thanks in advance for your assistance.